In this paper, a kind of bioglass that is suitable for preparing coating on Ti6Al4V alloy substrate is designed. Hydroxyapatite(HA)/Bioglass(BG) compound coating on Ti6Al4V is prepared, and the gradient structure, which is dense in bottom layer and porous near surface layer, is realized. The shear strength of the coating is tested by flat bottom corn method. The surface micrograph is observed by SEM and the structure and composite of the cross section are tested by EPMA.